Stereo Pickups & Phono cartridges: 1958 - today - stereophonic sound customer

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Pickup Technology by some popular stereo Pickups & Cartridges 1958 - today

Some well-known stereo Pick-up from 1958 to today

" URLs OF popular cartridge & pickup fire

" The influence OF A so-called ' Compensation Capacitor ' on frequency response OF mm of cartridges. " the influence of a compensation condenser on the frequency response of a mm pick-up.

. 1958 This is typical frequency response OF 1st generation Ceramics stereo Pickup Typical frequency response of one of the first ceramic(s) stereophonic sound customers:

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Ceramics Pickup cartridge by ELAC: BST 1 (1958) [ 2.2 ] Ceramic(s) pick-up . . . Fig. 2.2 refers tons of A Fig. 2.2 refers to the fundamental basic construction OF structure of a piezoelectric pick- piezoelectric pickup that up, as it was usually planned with which usually supplied crystal elements from with low turntables cost. Seignettesalz Most OF thesis pickups (Kaliumnatriumtartrat) for have seignette salt crystals inexpensive record players. To based on potassium the unfavorable influence of sodium tartrate. Regarding temperature and air humidity on the disadvantageous such a crystal connection ceramic influence OF temperature (s) offers against it by far more and humidity, more favorable characteristics. Fig. however, ceramics instead shows 2.1 the frequency OF that crystal compound response of a piezokeramischen does more offer much pick-up made of barium titanate more better properties. (asking IO 3 ). Fig. 2.1 shows the frequencies response OF A piezo ceramic pickup larva The piezoelectric pick-up family OF barium of titanates does not need usually the (asking IO ). Entzerrung necessary for 3 magnetic systems! Crystal or Piezo electric pickup family ceramic(s) pick-ups usually usually does emergency supplies in addition more output need equalization as voltage than magnetic (+30 necessary for magnetic railways... 40 railways in relation type! Generally, crystal or to mm of version), which delivers ceramics cartridges more only few millivolts with 1 kHz; MC deliver more outputs Fig. 2.2 types (Moving Coil) are volume-meets than Piezo electric stereo Pickup. appropriate with this frequency magnetic ones. The Simple example for construction [ 2.8 ]. usually still below millivolt. difference is +30 tons of 40 railways vs. mm of type that usually give out A few Fig. shows 2.2.1 a ceramic(s) milli volt only RK 1 kHz. stereophonic sound customer of Moving coil type typically RFT (Leipzig). Both the bearing DO less than 1 millivolt RK house and the coupling bar that frequencies. consist of hard rubber. The camp block of the clay/tone needle carrier is in the pick-up housing, Fig. 2.2.1 shows A ceramic which was however removed stereo pickup, as here. manufactured by RFT, Leipzig, Germany. The support block (blue) is larva OF hard more rubber, as wave as the coupling more lever (white). The support block OF more Fig. 2.2.1 decaying Ceramic Pickup by RFT, cantilever (stylus rod) has East Germany. Photo by the author. its position into the cartridge box which has been removed!

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How ton plug in A How does one attach a Crystal or Ceramic crystal or a ceramic(s) pick- Pickup up?

Unfortunately, decay audio Unfortunately modern audio amplifiers have NO special amplifiers does not have a inputs jack for A piezo eingangsbuchse for piezo electric pickup! This is A electrical pick-ups! This is in as very disadvantageous item much from disadvantage as the since the AUX input usually Aux entrance in this case usually does emergency guarantee does not best possible rendition best audio performance quality ensured. However one into this case. However, brought matching circuits out, reliable adapters circuits which are appropriate for the have been introduced for connection at the magnetic pick- using now the amplifier's up entrance! magnetic pickup inputs! Fig. 2.2.2 36 railways t reducer Fig. 2.2.2 reveals A 36 as well as an execution in form of railways t Attenuator as a simple L of member (27 wave as A simple l-type railways) reveal. Such adapters version (27 railways). Note absolutely need a shielded wave that search adapter housing! must have A shielded case! In the year 1958 specialists In 1958, Experts recommend the exchange of the recommend ton replace Fig. 2,2,2 Two adapters circuits for best setup. sapphire of piezoelectric pick-ups sapphire stylus OF piezo after about 50 operation hours. electric pickups after about On the other hand magnetic or 50 hours OF usage, while dynamic customers are usually magnetic or dynamic equipped with a long-lived pickups acres usually diamond needle. supplied with longlife dia. moon stylus.

1959

C. R. Bastiaans of makes A documentary report on different On the left of quoted author a child OF technical pickups for radio documentation provides magazine [ 2.9 ] bulletin of magazines [ 2.9 ]. The over different kinds of pick-ups for the radio funkschau of publishes A radio bulletin. The radio funkschau reprint from his detailed publishes a reproduction of its detailed contribution in German LANGUAGE contribution [ 2.10 ]. [ 2.10 ].

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This illustration, Fig. 2,3,1, represents A piezo electric This illustration, Fig. 2,3,1, system as manufactured by represents a piezo electrical wheel company. A signal system, which is produced by picked UP from the internal the company Garrard. From flank OF the groove, as the internal groove flank - reserved for left channel, this is reserved for the left causes movement tons channel - removed a signal direction as shown by the causes the movement shown unbroken arrow. Thus, the L by the not interrupted arrow. crystal slice wants imposed Thus L crystal with a lateral on laterally bending stress bending stress is subjected; which only CAN gene- and only this can cause an guesses/advises electric electrical tension at the volume-meets RK the crystal. crystal. Fig. 2.3.1

Fig. 2.3.2 shows improved popular construction with A Fig. a popular of far rhombus OF material developed construction with a compliant on for coupling flexible lozenge shows 2.3.2 DEVICES, as applied by as coupler from bendable British BSR, German DUAL, material. This system was and Dutch RONETTE of used by the companies BSR, companies. DUAL and Ronette (Holland).

Fig. 2.3.2 This illustration, Fig. 2,3,3, is exploded view tons called The design given with Fig. ' Duplo Pickup ' for expired 2,3,3 is an explosion normal format (mono) as representation of a so-called wave as Micro in such a way Duplo of system for the on for stereo! Note that # A replaced normal mono and wants clamped for stereo the Micro Stereoformat. Point mode, while there wants A has firm wedging with motion ton pivot POINTS # Stereobetrieb, during 1, 3 and 1, # 3, and # 2. However, # 2 fulcrums is. With N 78 A wants laterally moved monodisk rendition (system when playing N 78 disks turned around 180°) is after A helped revolution OF however laterally moved A. this system. This refined This refined system was used pickup has been thus likewise at the applied by aforesaid aforementioned companies. companies. Fig. 2.3.3

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Philips's company prefers the so- called w-system, s. Fig. 2.3.4. The enclosed ends OF both crystal slices of acres linked with A flexible stripe. The broken arrow represents force direction by right channel groove flank which accordingly bends the corresponding crystal slice on the right. Position #1 indicates pivot ton this instance. The company Philips prefers sucked. W-system, Fig. 2.3.4. The eingefass ten ends of both kristallplaettchen is connected by a flexible strip. The interrupted arrow shows the force direction of the right channel signal, which effect affect the assigned crystal Fig. 2.3.4 . (right). Number 1: Fulcrum.

The American Columbia The American Columbia favors company favours this ' winged this "winged construction", Fig. construction ', Fig. 2.3.5. The 2.3.5. The signal information of black arrow shows motion the left channel, whose direction OF left channel signal direction of motion is shown by which May only cause force RK the black arrow, causes an # 2. POINT #3 wants virtual application of force at point 2. bending pivot ton the axis Point 3 is the virtual fulcrum to defined by #1 and # 3. the 3 axle formed by the points 1 and.

Fig. 2.3.5

Westrex, the USA, has Westrex, the USA, developed a developed A dynamic pickup as dynamic pick-up, whose principally shown by Fig. 2.3.6. principle representation is The moving coils acres fixed shown in Fig. 2,3,6. The moved RK the struts OF both A coils are both at the props of of compliant plastics bow, # 1, # a flexible plastic handle (1, 2) 2, and the stylus more and at those the needle rod cantilever, #3 # 4. Thus, this (see 3, 4) fastens. Thus this construction is to example for construction is an example of MC pickup. Mc a pick-up.

Fig. 2.3.6

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Another refined dynamic pickup system presents Another thought out pick-up Danish Ortofon company. Fig. construction present the 2.3.7 reveals the that more Danish company Ortofon. As cantilever has been fixed RK Fig. reveals 2,3,7, the needle A cube for special Cardanic rod for this kardanaehnliche transmission. POINTS #1 and system was fastened to a #2 Mark the position OF the cube. Points 1 and 2 mark the suspension pin. Note that all camp pins. There here only magnetic system components the principle of this so-called have been omitted for cross coupler - which demonstrating only this so- converts here needle called ' CROSS more coupler ' deflection into rotation - to which converts stylus be represented was, all deflection tons of channel components for the magnetic separated rotary motion. system were omitted. Fig. 2.3.7

American Electrovoice company of creates on impressing piezo ceramic The American company pickup as illustrated by Fig. Electrovoice creates an 2.3.8. Its valve is based on impressive piezokeramischen lead circonate of titanates pick-up, Fig. 2.3.8. Its ceramic compound (LCT). Numbers 1 (s) tube is made of lead ton of 4 Marks the more outer zirconate titanate. The electrodes larva OF more outside electrodes consist of silver stripes, whereas the silver strips, while the concentric internal has been internal common mass leads. connected tons ground. This This polarized tube was polarized valve has been connected simply with the simply coup LED with rotary turnable needle carrier. This cantilever systems that carries both a mono and the harbours both mono and Stereonadel. stereo stylus.

Fig. 2.3.8

Fig. less expensive electro Fig. less pick-up of General magnetic pickup larva by Electric, the USA, complex General Electric company, the which can be manufactured, USA The diagonally aligned represents 2.3.9. The pieces, standing in orthogonal diagonally aligned and position ton polarizes 2.3.9 orthogonal standing pole represents A each OTHER, DO pieces guarantee the guarantee channel separation. kanaltrennung to each other.

Fig. 2.3.9

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Pickering company refers to a solution which is quite related Pickering bezieht sich auf eine to construction of General Lösung, die der von General Electric Company. However, Electric sehr ähnelt! Die this variant by Pickering, Fig. Pickering- Variante, Fig. 2.3.10, 2.3.10, has two pairs of pole hat jedoch zwei Paar Polschuhe pieces. (Note that only one of - nur eine von vier Spulen wird four coils appears in this hier gezeigt. Der Anker ist illustration.) The armature, to gleichzeitig Nadelträger und which also belongs the am Magneten drehgelagert. cantilever, has been suspended Dieses magnetische at the magnet for pivot Aufnehmersystem basiert position. Thus, this pickup somit auf dem effizienteren system is based on more Gegentaktprinzip. efficient push- pull mode. Fig. 2.3.10

Fig. 2.3.11: Diese weniger Fig. 2.3.11: This less expensive aufwendige Ausführung eines realization of dynamic MM dynamischen MM- Systems pickup (Moving Magnet) was (Moving Magnet) wurde sowohl favoured by American SHURE von den Firmen SHURE, USA, company as well as German als auch von der deutschen ELAC, see also Fig. 2.3.14. ELAC bevorzugt, siehe auch Fig. 2.3.14.

Fig. 2.3.11

The MC pickup by Fairchild, Das MC Tonabnehmersystem USA, shows Fig. 2.3.12. Both von Fairchild (USA) zeigt Fig. coils, diagonally aligned and 2.3.12. Beide Spulen, diagonal standing in orthogonal position ausgerichtet und senkrecht to each other, are immovably zueinander stehend, sind mit fixed at the cantilever. dem Nadelträger fest verbunden.

Fig. 2.3.12

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Neumann company, Germany, offers this construction of dynamic moving coil pickup.

Die Firma Neumann (Deutschland) bietet diese Konstruktion eines dynamischen MC- Tonabnehmers an.

Fig. 2.3.13

Frequenzgang (Kurve a): 20Hz-16000kHz +/- 2,5 dB Ausgangslast: 33 k Ohm Gestrichelt: linker Kanal. Übersprechen: Kurve b Nadelauflagekraft: 3-5 pond Compliance: 4x10-6dyn/cm Nadelrundung: 15 ... 18 µm Dyn./Effektive Masse:2,15mg Impedanz: 1480+j0,65 Ohm Ausgangsspannung p. Kanal: 20 mV bei 10 cm/s Schnelle Gewicht: 12 g

Fig. 2.3.14 ELAC Series STS 300 [2.11] . Technical diagram of a pickup as based on Fig. 2.3.11. Curve pair a shows frequency response at an output load of 33 kOhms and stylus force of 4 p. Broken line: Left channel. Curve pair b shows crosstalk. Compliance: 4x10-6 cm/dyn. Rounding of spherical stylus: 15-18 µm. Dynamic Mass: 2.15 milligrams. Weight: 12 grams Electrical impedance per coil: (1480 + j 0.65) Ohms. Output Voltage per channel: 20 mV at rapidity of 10 cm/sec. .

1961 . file:///C|/HiFiStuff/CartridgeDatabase/PickupTechnology.htm (8 of 17)6/3/2005 11:12:39 AM Stereo Pickups & Phono cartridges: 1958 - today - stereophonic sound customer

Fig. 2.4 Frequency Response of Shure M212. Reference Disks: Electrola EKL-35 and RCA 12-5-71. .

. . In 1961, Shure Company Im Jahr 1961 ist mit dem presents a pickup unit, a aus langjähriger Mono- tone arm supplied with a Tonabnehmer- magnetic cartridge, Herstellung gewonnenen whose technical data Technologie- Stand der might impress even Firma Shure eine today's users. See Fig. Tonarmeinheit lieferbar, 2.4 for frequency deren technische Daten response diagram. This aus damaliger wie product, the M212, was heutiger Sicht sicherlich basing on the company's enorm beeindrucken. Fig. long experience of 2.4 zeigt den making phonographic Übertragungsbereich. appliance.

Technische Daten: Technical Data: Frequenzbereich: 20-20.000 Hz ±2,5 dB Frequency Response: Übersprechen: < - 20 dB 20-20,000 Hz ±2.5 db Compliance: 9x10-6cm/dyn Crosstalk: < - 20 db Nadeldruck*: 1,5-2,5 pond Compliance: 9x10-6cm/dyn Dyn. Masse: 1,3 mg Stylus Force: 1.5-2.5 p Diamantnadel: Rundungsradius 17µm Dyn. Mass: 1.3 milligrams. Diamond Stylus: Fig 2.5 Ausgangsspannung: 4.5 mV spherical 17µm Shure M212. bei 1kHz All data and both illustrations by [2.1]. Output Voltage: 4.5 mV at Einführungspreis in 1kHz Deutschland: 404,15 DM . *: Originalzitat (auch ff.); besser: Nadelauflagekraft

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. . A New Semiconductor Phono 1965 Die Funkschau Nr. 22 berichtet anhand Transducer is introduced by John F. des links zitierten Beitrags über ein Wood in "Electronic Worlds" on Halbleiter- Tonabnehmersystem, das die Feb. 1965, P.50. The manufacturer in den USA ansässige Firma Euphonics is Euphonics Corp., USA, that offers Corp. für circa 80 US-$ anbietet. Dieses U- this pickup system for nearly 80 15 genannte System besitzt je einen US-$. The U-15 type has one silicon Siliziumchip pro Kanal in den chip (63 x 63 x 5 mil) per channel Abmessungen 1,6 x 1,6 x 0,13 mm und that converts change of pressure to wandelt Druckänderungen in change of resistance. This is its entsprechende Widerstandsänderungen excellent technical data of that um. time: Das System hat diese für damalige Verhältnisse exzellenten Daten: Frequency Response: 0-30,000 Hz ±2 db Frequenzbereich: 0-30.000 Hz ±2 dB Crosstalk: < - 25 db Übersprechen: < - 25 dB Compliance: 20 x10-6cm/dyn (s.Tab. 2.1) Compliance: 20 x10-6cm/dyn (s.Tab. 2.1) Stylus Force: 0.75-3 pond Nadelauflagekraft: 0,75-3 pond Weight: 2 grams Gewicht: 2 g Diamond Stylus: Diamantnadel: biradial 5x23 µm biradial/elliptical 5x23 µm Ausgangsspannung: max. 80 mV bei 20 V Output Voltage: max. 80 mV at 20 V Betriebsspannung (Speisestrom: 10 mA). Supply (Feeding current: 10 mA).

In the same year, F.A. Loescher, Der Audioexperte F.A. Loescher führt im audio expert, thoroughly tests gleichen Jahr gründliche Tests an einigen some pickup cartridges of Tonabnehmern von bemerkenswertem remarkable reputation [2.3]. Ruf durch [2.3]. Classification: Rangfolge: 1 Shure V15 1 Shure V15 2 Ortofon SPU-TE and ADC-4E 2 Ortofon SPU-TE und ADC-4E 3 Pickering V15AME1 a. Shure 3 Pickering V15AME1 u. Shure M44-7 M44-7 . .

Compliance Dynamic Stylus Stylus Output at Weight Vertical Stylus Crosstalk Manufacturer Type [10-6cm/dyn] Mass Rounding Force R=5cm/ [grams] Pitch Form [db] hor. vert. [milligram] [µm] [pond] sec 0.8 - 6mV at Shure V15 11 25 25 - 15° biradial 5 / 22.5 > - 25 1.5 50k0hms SPU- 10mV at Ortofon 17 10 10 1 20° biradial 5 / 30 2 > - 25 TE 50k0hms Audio ADC- 0.8 - 8mV at 6 30 30 0.8 15° biradial 5 / 30 > - 22 Dynamics 4E 1.5 50k0hms V15 6mV at Pickering 5 13 10 - 15° biradial 5 / 30 0.8 - 3 > - 22 AME1 50k0hms 5mV at Shure M44 -7 7 20 20 - 15° spherical 15 - 18 1.5 - 3 > - 24 50k0hms 9 0.2V at Sonotone 2.8 13 - 2.5 - spherical 15 - 18 1 - 3 > - 20 TAHC 2M0hms

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0.3V at Connoisseur SCU-1 7.5 10 - 1 - spherical 15 - 18 1.5 - 3 > - 20 2M0hms STC 0.15V at Schumann 4 8 5 2.4 12° spherical 15 - 18 2 - 4 > - 15 481 2M0hms Tab. 2 .1 [2.3] 1N = 105 dyn 1cm = 0.01m Notes: Dynamic / Magnetic Type biradial = elliptical Stylus Rounding originally quoted 5 / 30 for Shure V15 has been Ceramic Type corrected. Anmerkungen: Vertical Pitch = vertikaler Nadel-Anstellwinkel Angegebene Ausgangsspannungen bei s = 5 cm/s. Für Shure V15 zitierte Nadelgeometrie (Rundung 5 / 30) wurde korrigiert. .

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Fig. 2.6 Frequency Response Diagrams (Links = Left Channel; Rechts = Right Channel) Frequenzdiagramme. a Shure V15 b Ortofon SPU-TE c Audio Dynamics ADC-4E d Pickering V15 AME1 e Shure M44 -7 f Sonotone 9 TAHC g Sonotone 9 TAHC, output load 1 MOhms h Connoisseur SCU -1 i Connoisseur SCU -1 plus pre-amplifier for MM system (input load: 50 kOhms) k Schumann STC 481 Schumann STC 481 plus RC correction filter plus pre-amplifier for MM system (input load: 50 l kOhms) . Technical Data of Shure Products, 1965 [2.4] ..

Shure Type . M44-5 M44-7 M55-E V15

Frequency Response Hz 20 - 20 000 20 - 20 000 20 - 20 000 20 - 20 000 Frequenzbereich Output Voltage (1 kHz) mV 6 9 6 6 Ausgangsspannung Channel Separation db > 25 > 25 > 25 > 25 Kanaltrennung Cartridge Load k0hms 47 47 47 47 Abschlusswiderstand Compliance cm/dyn 25x10-6 25x10-6 25x10-6 25x10-6 Stylus Force pond 0.75 - 1.5 1.5 - 3 0.75 - 1.5 0.75 - 1.5 Nadelauflagekraft Inductivity per Channel mH 680 680 680 680 Induktivität pro Kanal DC Resistance p. Channel 0hms 650 650 650 650 Wicklungswiderstd.p.K. Stylus Rounding µm 13 18 22.5x5 22.5x5 Nadelverrundung Tab. 2.2 .

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. Philips, Netherlands, 1968 Der Philips Konzern stellt sein introduces a High Fidelity erneuertes High Fidelity ceramic pickup cartridge Tonabnehmersystem mit der with renewed transducer Bezeichnung GP 233 aus Blei- material: The compound Titan-Zirkonat Keramik vor for GP 233 product is lead- (PbTiZrO3). titanate- circonate: In seinen PbTiZrO3. übertragungstechnischen This development largely Eigenschaften übertrifft diese excels barium titanate Entwicklung deutlich die auf based ceramic pickups. Bariumtitanat basierenden However, this pickup Tonabnehmer. Es wird jedoch ein system will need a pre- Phono- Vorverstärker benötigt. amplifier. Technische Daten GP 233: Technical Data GP 233: Resonanzfrequenz der Keramik: Ceramic Resonant 100 kHz...1 MHz (!) Frequency: Frequenzbereich: 100 kHz...1 MHz (!) 30-17.000 Hz ±2 dB Frequency Response: Fig. 2.7. Übersprechen: < - 24 dB 30-17,000 Hz ±2 db Philips GP 233 Compliance: 8x10-6cm/dyn Crosstalk: < - 24 db vertikal: 6,5x10-6cm/dyn Compliance: 8x10-6cm/dyn Nadelauflagekraft 1,5 -2 pond vertical: 6.5x10-6cm/dyn Dynamische Masse: 2 Gramm Stylus Force 1.5 -2 pond . Dyn. Mass: 2 grams .

. . At German HiFi fair '68, Auf der Düsseldorfer HiFi Messe Dusseldorf, Japanese stellt die japanische Firma Thoshiba company Toshiba einen recht presents a much beeindruckenden optischen impressing optical pickup Tonabnehmer vor, den C-100P, cartridge, the C-100P type wie im Foto Fig. 2.8 dargestellt. as represented by Fig. 2.8. Diese Innovation beruht nicht This innovation is not auf dem typischen typically based on Generatorprinzip, wie Fig. 2.9 generator principle, as Fig. entsprechend ausweist. Der 2.9 does demonstrate Nadelträger ist an einem accordingly. The cantilever Gummifederplättchen befestigt, is fixed at the rubber plate welches den viskosen that maintains viscous Widerstand für die Compliance resistance for compliance (Nadelnachgiebigkeit und and absorbing. The fixed Fig. 2.8. Dämpfung) herstellt. Sowohl der screen as well as the . unbewegliche Schirm als auch moving shutter are slit. der sogenannte Schatter The photo transistors have (bewegte Schlitzblende) sind extremely focussed lens. geschlitzt. Die Fototransistoren verfügen über eine stark bündelnde Optik. The designers could reduce harmonic distortion to less

file:///C|/HiFiStuff/CartridgeDatabase/PickupTechnology.htm (13 of 17)6/3/2005 11:12:39 AM Stereo Pickups & Phono cartridges: 1958 - today - stereophonic sound customer than 0.65% at 1 kHz, cf. Die Entwickler konnten den Fig. 2.10. The rating of the Klirrfaktor unter 0,65% bei 1 2 Volts filament lamp will kHz halten, vgl. Fig. 2.10. Die be circa 10,000 hours. The Lebensdauer der 2 V Glühfaden- large size of the cartridge, Lampe soll ca. 10.000 Stunden as shown by the photo, is a betragen. Das große Gehäuse result of sink function for des Tonabnehmers (Foto) wurde the lamp's heat! für die Ableitung der Lampenwärme bemessen! This optical pickup has an enormous transmission Dieser optische Tonabnehmer parameter of 14.5 mVs/ hat einen enorm hohen cm, respectively 40 mVs/ Übertragungsfaktor von cm per channel at the 14,5_mVs/cm, beziehungsweise output of its pre- amplifier. 40_mVs/cm pro Kanal an seinem Vorverstärkerausgang. Technical Data by manufacturer: Technische Daten vom Hersteller: Frequency Response: Frequenzbereich: 20-40,000 Hz Fig. 2.9. 20-40.000 Hz Crosstalk: < - 32 db . Compliance: 30 x10-6cm/dyn Übersprechen: < - 32 dB -6 Stylus Force: 0.5-1.7pond Compliance: 30 x10 cm/dyn Dyn. Mass: 0.3 milligram. Nadelauflagekraft: 0,5-1,7 pond Weight: 11.5 grams Dyn. Masse: 0,3 mg Diamond Stylus: Gewicht: 11,5 g birad./elliptical 7.6x20.3 µm Diamond Stylus: biradial/elliptisch 7,6x20,3 µm Reference: [2.5]. Quelle: [2.5].

Fig. 2.10.

Shure company improves Die Firma Shure verbessert das trackability of M75 pickup 1970 Abtastverhalten der M75 cartridges [2.6]. The Tonabnehmer [2.6]. Ihr bestes company's best pickup, System V15 II beherrscht jetzt V15 II, can handle now eine Schnelle von 35 cm/s. rapidity of 35 cm/sec. . .

Dynamic Mass Stylus Force Max. Rapidity Type Stylus Form Effektive Masse Nadelausführung Nadelauflagekraft Max. Schnelle [x 0.001 kg] [pond] [cm/sec] (1 kHz) M75 -6 Type2 0.6 spherical 1.5 - 3 28 M75 -G Type2 0.6 spherical 0.75 - 1.5 28 M75 -E Type2 0.6 biradial 0.75 - 1.5 28 M75 -EJ Type2 0.6 biradial 1.5 - 3 35 Tab. 2.3

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. Matsushita, Japan, has made use of Matsushita, Japan, verwendet einen strain gauge for a new pickup Dehnungsmessstreifen (DMS) für einen system. Sescosem, a French neuartigen Tonabnehmer. Das französische company, takes pattern from this Unternehmen Sescosem greift diese development and presents a Entwicklung auf und präsentiert eine verfeinerte sophisticated application basing on Anwendung mit einem Siliziumstreifen in a silicon gauge coupled with a MOS Kopplung mit einem MOS- Transistorschaltkreis. transistor device. This pickup will Dieser Tonabnehmer soll eine deliver 200 mV output voltage per Ausgangsspannung von 200 mV pro Kanal channel within a frequency range liefern. Sein Frequenzbereich wird mit 0-30.000 of 0-30,000 Hz. The dynamic mass Hz angegeben. Die effektive (dynamische was quoted 0.7 milligram at a Masse) dieses Systems beträgt 0,7 mg compliance of 10x10-6 cm/dyn for (Compliance: 10x10-6 cm/dyn) für einen a stylus force of 0.75 pond. Nadeldruck von 0,75 pond. Der However, it has been proposed to Geräuschspannungsabstand von lediglich 40 dB improve this development for the ließ diese Entwicklung jedoch S/N ratio of only 40 db; [2.7]. verbesserungswürdig erscheinen; [2.7]. . . 2004 audio-technica CN5625AL This low-cost MM cartridge Dieses preiswerte MM made by audio-technica is a Magnetsystem von audio-technica much popular ''aftermarket ist ein beliebtes sog. product' which is offered for "Aftermarket"- Produkt, das ein circa 30 US-$ by an American Lieferant in den USA für ca. 30 US- retailer (April 2004). The $ dem Endverbraucher anbietet CN5625AL can easliy replace (April 2004). Durch seine 1/2" many other cartridges by its Zweiloch- Befestigung kann das 1/2" two hole standard mount CN5625 viele andere system. Magnetsysteme problemlos ersetzen. Technical Data (Quotation): Frequency Response: Technical Daten (Zitat): 20-20,000 Hz Frequenzbereich: Linearity: No data by manufacturer 20-20.000 Hz publication. Linearität: keine Herstellerangabe Channel Separation: 20db (1kHz) Kanaltrennung: 20dB (1kHz)

Channel Balance: 1.5db Kanalabweichung: 1.5dB Fig. 2.11 Stylus force: 1.5-2.0grams Nadelauflagekraft: 1.5-2.0 p Stylus form: conical (0.7mil) Nadelform: konisch (0.7mil) Output voltage: ca. 4mV at 1kHz Ausgangsspannung: ca. 4mV bei and a rapidity of 5cm/sec 1kHz und 5cm/sec Nadelschnelle

MM Tonabnehmer-Angebot eines deutschen Anbieters

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. Fig. 2.12 & 2.13 are photos of an opened magnetic pickup made by Audio Dynamics (ADC), USA. Each channel has two coils which are linked crosswise. Their pole pieces are diagonally falling into the inlet for the cantilever. (US Patent 3 294.405)

Fig. 2.11 & 2.12 sind Fotos von einem geöffneten Magnetsystem von Audio Fig. 2.11 Dynamics (ADC), USA. Jeder Kanal hat zwei kreuzweise verbundene Photos by the author. Spulen, deren Polbleche diagonal im Nadelträger- Kanal münden. (US Patent 3 294.405). Fig. 2.12

. Specifications : URLs of popular cartridge & pickup brands In alphabetical order. April 2004. Cartridge products Name Internet URL [Some models possibly have expired.] ADC http://www.adelcom.net/ADCCart1.htm all audio-technica http://www.audio-technica.com/guide/other/styli/cart.html all Dynavector http://www.dynavector.com/dvcarts.htm all Goldring http://www.mantra-audio.co.uk/goldring_cartridge_technical_data.html all Ortofon http://www.ortofon.com/html/body_moving_coil_technical_data.html moving coil cartridges http://www.ortofon.com/html/body_magnetic_technical_data.html moving magnet cartridges Pickering http://www.pickeringuk.com/spex.html all Shure http://www.shure.com/v15vxmr.html V15VxMR http://www.shure.com/m97xe.html M97xE http://www.shure.com/m92e.html M92E Other (retailer): http://www.moving-coil-cartridges.com/ Errors and omissions excepted! Irrtum und Auslassungen vorbehalten! | back to top | .

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References - Quellen

[2.1] Funkschau 1961, Nr.18, S.473. [2.2] Funkschau 1958, Nr.21, S.489. [2.3] Funkschau 1965, Nr.15, S.411-414. [2.4] Funkschau 1965, Nr.10, S.264. [2.5] Funkschau 1969, Nr. 2, S.99-100. [2.6] Funkschau 1970, Nr.5, S.148. [2.7] Funkschau 1970, Nr.12, S.376. [2.8] Funkschau 1958, Nr.11, S.273 [2.9] Radio-Bulletin 1959, No. 7. [2.10] Funkschau 1960, Nr.9, S.487-488. [2.11] Funkschau 1959, Nr.9, S.209. .

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